George H.W. Bush and Barbara Bush hospitalized

_{Editor's note: This story has been updated throughout.}

Former President George H.W. Bush and former First Lady Barbara Bush were both being treated Wednesday at Houston Methodist Hospital, spokesman Jim McGrath said in a news release. 

The former president was admitted to the hospital Saturday for shortness of breath, McGrath said in a tweet Wednesday. Bush, 92, was admitted to address "an acute respiratory problem stemming from pneumonia," the news release said. By midday Wednesday, he was stable and was expected to remain in ICU for observation.

He "has responded very well to treatments," McGrath tweeted. "Hope to have him out soon."

Barbara Bush was admitted to the hospital Wednesday morning as a precaution after experiencing coughing and fatigue, according to the news release.

Last month, McGrath announced that George H.W. Bush and Barbara Bush would not attend President-elect Donald Trump's inauguration, citing the couple's age and health. Bush also did not attend President Obama's inauguration in 2013. 

Bush, who uses a wheelchair, suffers from a form of Parkinson's disease that leaves him unable to walk. In July 2015, he was hospitalized in Maine after falling and breaking a bone in his neck. In 2014, he was hospitalized for shortness of breath. He also contracted bronchitis in November 2012, which kept him in the hospital for several months. 

Because of the hospitalization, Texas Land Commissioner George P. Bush will miss Trump's inauguration. George P. Bush had been the only prominent member of the Bush family to support Trump during the campaign.

George P. Bush still plans to attend a private event next week with Trump in Washington, a spokesman for the land commissioner said.

Read the Tribune's related coverage:

• George W. Bush and Laura Bush did not vote for either major-party presidential nominee this year. Instead, they did not make a selection at the top of the ticket and voted for Republicans down ballot.
• Land Commissioner George P. Bush, who has not endorsed Donald Trump, is now asking Texas Republicans to support the Republican presidential nominee. 
• For the first time since his own presidency, George H.W. Bush is planning to stay silent in the race for the Oval Office — and the younger former president Bush plans to stay silent as well. 

Patrick Svitek contributed to this report.